2500 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
MSA treatment. From these results it can be inferred again
that MSA is adsorbed on the galena surface.
The full spectrum of scan XPS in Figure 9 illustrates
the presence of characteristic peaks corresponding to Pb,
O, C, and S on the pristine surface of galena and MSA.
The appearance of C1s can be attributed to organic car-
bon contamination in the atmosphere, further confirming
the high purity of galena. Upon treatment with MSA, an
increase is observed in the peaks associated with O 1s, C 1s,
and S 2p in the galena spectrum. This augmentation can be
attributed to the presence of O, C, and S elements within
MSA structure and aligns with a concurrent rise in concen-
trations for these elements as indicated by analytical data.
These findings provide additional evidence supporting
adsorption phenomena between MSA and galena surface.
200 250 300 350
0.0
0.2
0.4
0.0 0.2 0.4 0.6 0.8 1.0
0.05
0.10
0.15
0.20 (a)
Wavelength (nm)
Pb2+ 0.05*10-6mol
Pb2+ 0.075*10-6mol
Pb2+ 0.1*10-6mol
Pb2+ 0.15*10-6mol
Pb2+ 0.2*10-6mol
Pb2+ 0.25*10-6mol
Pb2+ 0.3*10-6mol
Pb2+ 0.5*10-6mol
Pb2+ 1*10-6mol
(b)
Concentration (10–6 mol)
Figure 8. UV absorption spectrum of MSA after interaction with Pb2+ and (b) Pb2+ titration curve
1200 1000 800 600 400 200 0
MSA
S 2p C 1s
O 1s
Galena
S 2p
S 2p
C 1s
Binding Energy(eV)
O 1s
Galena+MSA
Figure 9. The wide survey scan XPS of untreated and treated galena with MSA
ABS ABS
Counts(s)
MSA treatment. From these results it can be inferred again
that MSA is adsorbed on the galena surface.
The full spectrum of scan XPS in Figure 9 illustrates
the presence of characteristic peaks corresponding to Pb,
O, C, and S on the pristine surface of galena and MSA.
The appearance of C1s can be attributed to organic car-
bon contamination in the atmosphere, further confirming
the high purity of galena. Upon treatment with MSA, an
increase is observed in the peaks associated with O 1s, C 1s,
and S 2p in the galena spectrum. This augmentation can be
attributed to the presence of O, C, and S elements within
MSA structure and aligns with a concurrent rise in concen-
trations for these elements as indicated by analytical data.
These findings provide additional evidence supporting
adsorption phenomena between MSA and galena surface.
200 250 300 350
0.0
0.2
0.4
0.0 0.2 0.4 0.6 0.8 1.0
0.05
0.10
0.15
0.20 (a)
Wavelength (nm)
Pb2+ 0.05*10-6mol
Pb2+ 0.075*10-6mol
Pb2+ 0.1*10-6mol
Pb2+ 0.15*10-6mol
Pb2+ 0.2*10-6mol
Pb2+ 0.25*10-6mol
Pb2+ 0.3*10-6mol
Pb2+ 0.5*10-6mol
Pb2+ 1*10-6mol
(b)
Concentration (10–6 mol)
Figure 8. UV absorption spectrum of MSA after interaction with Pb2+ and (b) Pb2+ titration curve
1200 1000 800 600 400 200 0
MSA
S 2p C 1s
O 1s
Galena
S 2p
S 2p
C 1s
Binding Energy(eV)
O 1s
Galena+MSA
Figure 9. The wide survey scan XPS of untreated and treated galena with MSA
ABS ABS
Counts(s)